3 Piece Set Of 3/8" Square Drive Hex Head Adaptors. This is a new 3 piece set of 3/8" square drive, hex head adaptors. Perfect for automotive and home repair. These are for use with any hex head tool, when you need to use square drive sockets. Each measures approximately 2 9/16" (65 mm) long. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.